Conservatory roof help

Evening all

So done a conservatory roof today and to my disappointment wasn't a great job I spent longer than I probably should have cleaning the roof not for trying it didn't look clean.

Tried Tfr, no no nonsense degreaser got up close and hand cleaned but it didn't budge

What do u guys suggest is my error

The roof was some perspex type with gaps between the top and bottom and to top it all off IT LEAKED

My first fail result in my eyes

Advice and opinions welcomed please

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I've had this, im thinking bleach or hypo, but only as a last resort, hate using the stuff.

are you sure its not inside the panels, if it leaks its a possibility

You sure it's not **** in the gaps..as we had this stuff on our conservatory and went like that as flush and bugs got stuck inside...[emoji53]

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*flies

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As above. That roof is polycarbonate and it's common for mould to creep its way up the tubular moulding 

It must be inside the sheets.

generally with plastic roofs they come up pretty easy with tfr or ubik, no real need for much else

Although sometimes i like to add a nice slug of bleach and fairy for fun 

Im glad u guys have alternative answes I felt bad being paid for the job as it looked dirty after I finished but I showed the lady my efforts and how it wouldn't budge I spent longer than I needed too at the job too and I walked away feeling bad it didn't look good and thought maybe I didn't do something or enough :/

All a learning curve I guess

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